Input interpretation
phosphorus (chemical element) | neon (chemical element) | selenium (chemical element)
Periodic table location
Periodic table location
Images
Images
Basic elemental properties
| phosphorus | neon | selenium atomic symbol | P | Ne | Se atomic number | 15 | 10 | 34 short electronic configuration | [Ne]3s^23p^3 | [He]2s^22p^6 | [Ar]4s^23d^104p^4 Aufbau diagram | 3p 3s | 2p 2s | 4p 3d 4s block | p | p | p group | 15 | 18 | 16 period | 3 | 2 | 4 atomic mass | 30.973761998 u | 20.1797 u | 78.971 u half-life | (stable) | (stable) | (stable)
Thermodynamic properties
| phosphorus | neon | selenium phase at STP | solid | gas | solid melting point | 44.2 °C | -248.59 °C | 221 °C boiling point | 280.5 °C | -246.08 °C | 685 °C critical temperature | | 44.4 K | 1766 K critical pressure | | 2.76 MPa | 27.2 MPa molar heat of fusion | 0.64 kJ/mol | 0.34 kJ/mol | 5.4 kJ/mol molar heat of vaporization | 12.4 kJ/mol | 1.75 kJ/mol | 26 kJ/mol specific heat at STP | 769.7 J/(kg K) | 1030 J/(kg K) | 321.2 J/(kg K) adiabatic index | | 5/3 | (properties at standard conditions)
Material properties
| phosphorus | neon | selenium density | 1.823 g/cm^3 | 9×10^-4 g/cm^3 | 4.819 g/cm^3 liquid density | | | 3.99 g/cm^3 molar volume | 16.99 cm^3/mol | 22400 cm^3/mol | 16.39 cm^3/mol Mohs hardness | | | 2 (≈ gypsum) Brinell hardness | | | 736 MPa bulk modulus | 11 GPa | | 8.3 GPa shear modulus | | | 3.7 GPa Young's modulus | | | 10 GPa Poisson ratio | | | 0.33 refractive index | 1.001212 | 1.000067 | 1.000895 sound speed | | 936 m/s | 3350 m/s thermal conductivity | 0.236 W/(m K) | 0.0491 W/(m K) | 0.52 W/(m K) (properties at standard conditions)
Electromagnetic properties
| phosphorus | neon | selenium electrical type | conductor | | resistivity | 1×10^-7 Ω m (ohm meters) | | electrical conductivity | 1×10^7 S/m (siemens per meter) | | magnetic type | diamagnetic | diamagnetic | diamagnetic volume magnetic susceptibility | -2.06×10^-5 | -3.69×10^-9 | -1.93×10^-5 mass magnetic susceptibility | -1.13×10^-8 m^3/kg (cubic meters per kilogram) | -4.1×10^-9 m^3/kg (cubic meters per kilogram) | -4×10^-9 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | -3.5×10^-10 m^3/mol (cubic meters per mole) | -8.27×10^-11 m^3/mol (cubic meters per mole) | -3.16×10^-10 m^3/mol (cubic meters per mole) work function | | | 5.9 eV (Polycrystalline) threshold frequency | | | 1.427×10^15 Hz (hertz) color | (colorless) | (colorless) | (gray) refractive index | 1.001212 | 1.000067 | 1.000895
Reactivity
| phosphorus | neon | selenium valence | 5 | 0 | 6 electronegativity | 2.19 | | 2.55 electron affinity | 72 kJ/mol (kilojoules per mole) | 0 kJ/mol (kilojoules per mole) | 195 kJ/mol (kilojoules per mole) first ionization energy | 1011.8 kJ/mol (kilojoules per mole) | 2080.7 kJ/mol (kilojoules per mole) | 941 kJ/mol (kilojoules per mole) ionization energies | 1011.8 kJ/mol | 1907 kJ/mol | 2914.1 kJ/mol | 4963.6 kJ/mol | 6273.9 kJ/mol | 21267 kJ/mol | 25431 kJ/mol | 29872 kJ/mol | 35905 kJ/mol | 40950 kJ/mol | 2080.7 kJ/mol | 3952.3 kJ/mol | 6122 kJ/mol | 9371 kJ/mol | 12177 kJ/mol | 15238 kJ/mol | 19999 kJ/mol | 23069.5 kJ/mol | 115379.5 kJ/mol | 131432 kJ/mol | 941 kJ/mol | 2045 kJ/mol | 2973.7 kJ/mol | 4144 kJ/mol | 6590 kJ/mol | 7880 kJ/mol | 14990 kJ/mol
Reactivity
Atomic properties
| phosphorus | neon | selenium term symbol | ^4S_(3/2) | ^1S_0 | ^3P_2 atomic radius | 100 pm | 38 pm | 115 pm covalent radius | 107 pm | 58 pm | 120 pm van der Waals radius | 180 pm | 154 pm | 190 pm (electronic ground state properties)
Abundances
| phosphorus | neon | selenium universe abundance | 7×10^-4 mass% | 0.13 mass% | 3×10^-6 mass% solar abundance | 7×10^-4 mass% | 0.1 mass% | meteorite abundance | 0.11 mass% | | 0.0013 mass% crust abundance | 0.099 mass% | 3×10^-7 mass% | 5×10^-6 mass% ocean abundance | 7×10^-6 mass% | 1.2×10^-8 mass% | 4.5×10^-8 mass% human abundance | 1.1 mass% | | 5×10^-6 mass% universe molar abundance | 3×10^-5 mol% | 0.008 mol% | 5×10^-8 mol% solar molar abundance | 3×10^-5 mol% | 0.007 mol% | meteorite molar abundance | 0.07 mol% | | 2.9×10^-4 mol% ocean molar abundance | 1.4×10^-6 mol% | 3.7×10^-9 mol% | 3.5×10^-9 mol% crust molar abundance | 0.07 mol% | 3×10^-7 mol% | 9.9×10^-7 mol% human molar abundance | 0.22 mol% | | 4×10^-7 mol%